Can ComboBox in AjaxToolkit use lazy loading

Can I make ComboBox from AjaxToolkit make call to server every time new letter is 开发者_JAVA技巧entered and update ComboBox items?

Have you looked at the AutoCompleteExtended available in the AjaxControltoolkit ? AutoCompleteExtender Demo
The control is similar to a combo box and it offers dynamic filtering of results based on user input.

Please check Autocomplete extender in AJAX control toolkit.

The suggesions for the text entered in the textbox can be populated by using service method.

Check the properties ServiceMethod,ServicePath.